<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=460740
-->
<head>
  <title>Test for Bug 460740</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=460740">Mozilla Bug 460740</a>
<p id="display"></p>
<div id="content">
  <ul>
    <li contenteditable>
      Editable LI
    </li>
    <li>
      <div contenteditable>
        Editable DIV inside LI
      </div>
    </li>
    <li>
      <div>
        <div contenteditable>
          Editable DIV inside DIV inside LI
        </div>
      </div>
    </li>
    <li>
      <h3>
        <div contenteditable>
          Editable DIV inside H3 inside LI
        </div>
      </h3>
    </li>
  </ul>
  <div contenteditable>
    Editable DIV
  </div>
  <h3 contenteditable>
    Editable H3
  </h3>
  <p contenteditable>
    Editable P
  </p>
  <div>
    <p contenteditable>
      Editable P in a DIV
    </p>
  </div>
  <p><span contenteditable>Editable SPAN in a P</span></p>
</div>

<pre id="test">
<script type="application/javascript">

/** Test for Bug 460740 **/
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(runTests);

const CARET_BEGIN  = 0;
const CARET_MIDDLE = 1;
const CARET_END    = 2;

function split(element, caretPos) {
  // compute the requested position
  var len = element.textContent.length;
  var pos = -1;
  switch (caretPos) {
    case CARET_BEGIN:
      pos = 0;
      break;
    case CARET_MIDDLE:
      pos = Math.floor(len/2);
      break;
    case CARET_END:
      pos = len;
      break;
  }

  // put the caret on the requested position
  var range = document.createRange();
  var sel = window.getSelection();
  range.setStart(element.firstChild, pos);
  range.setEnd(element.firstChild, pos);
  sel.addRange(range);
  
  // simulates a [Return] keypress
  synthesizeKey("VK_RETURN", {});
}

// count the number of non-BR elements in #content
function getBlockCount() {
  return document.querySelectorAll("#content *:not(br)").length;
}

// count the number of BRs in element
function checkBR(element) {
  return element.querySelectorAll("br").length;
}

function runTests() {
  var count = getBlockCount();
  var nodes = document.querySelectorAll("#content [contenteditable]");
  for (var i = 0; i < nodes.length; i++) {
    var node = nodes[i];
    node.focus();
    is(checkBR(node), 0, node.textContent.trim() + ": This node should not have any <br> element yet.");
    for (var j = 0; j < 3; j++) { // CARET_BEGIN|MIDDLE|END
      split(node, j);
      ok(checkBR(node) > 0, node.textContent.trim() + " " + j + ": Pressing [Return] should add (at least) one <br> element.");
      is(getBlockCount(), count, node.textContent.trim() + " " + j + ": Pressing [Return] should not change the number of non-<br> elements.");
      document.execCommand("Undo", false, null);
    }
  }
  SimpleTest.finish();
}
</script>
</pre>
</body>
</html>
